Inking mechanism



Allg 30, 1938 c. w. HARROLD Er AL i 2,128,360

INKING MECHANISM Original Filed Dec. 10, 1934 3 Sheets-Sheet l CHARLESI4( Mimmo BY CL Yae- G. #ORTO/v M Mm 5%2 ATTORNEYS.

30 w33- c. w. HARROLD ET AL '2,128,360

` HIKING MEcHANIsM original Filed Dec. 1o, 1934 s sheets-sheet 2 fazINVENTOR.

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Patented Aug. 1938 iran Aras PATENT OFFICE G. Horton, Bedford,

application Ohio, Seybcld-Potter Company, corporation of DelawareDecember 1o, 1934. serial signore to Harris- Cleveland, Ohio, a

No. 756.7%. Divided and this application November l2, 1935, Serial No.49,366

1 4 claims. (ci. ini-ssi) This invention relates to improvements ininking mechanism, and has to do with th'emount- .ing of the inkerandwith throw-oil means therefor.

One of the principal objects of the invention is the provision of simpleyand improved inker throw-off mechanism which is adapted for either lmanual or automatic operation, together with means associated with thethrow-ofi' means for exposing the form rollers of the inker for repairor replacement without disturbing any other elements of the inker.

Other objects and features of novelty will appear as we proceed with thedescription of that embodiment of thel invention which, for the purposesof the present application, we have illustrated in the accompanyingdrawings, in which Fig. 1 is a side elevational view of an oi-setprinting press showing inking mechanism embodying the invention.

Fig. 2 is an end elevation of the same with certain parts removed andothers broken away in order to more clearly illustrate the invention.

Fig. 3 is a View similar to Fig. 1, showing the form rollers of theinker thrown o.

Fig. 4 is a further fragmental side elevation, showing the principalpart of the inker raised to expose the form rollers.`

Fig. 5 is a plan View, partly in section, illustrating the pivotallymounted inker frames, on a smaller scale, and

Fig. 6 is a fragmental elevational view showing the free end of thelower inker frame in its raised position.

The present case is'a division of our copending application Serial No.756,794, filed December 10, 1934.

The invention is illustrated herein as appliedto an off-set presswherein theframe of the press comprises side members I and tie rods II.In the printing couple illustrated there are three parallel shafts I2,I3 and I4 upon which are rotatably mounted a plate cylinder I5, ablanket cylinder I6, and an impression cylinder Il. 'Ihere is also adelivery cylinder I8 mounted upon a shaft I9.

20 is a power shaft carrying a belt pulley 2| which may be driven fromany convenient source of power. On the shaft 20 there is a'pinion 22which meshes with a gear 23 on a short shaft 24 that'carries a pinion 25on its inner end. Pinion 25 meshes with a gear 26 on blanket cylinderI6. Cylinders I and I'I are driven from gear 26 through a gear 21 oncylinder I5 and a similar gear, not shown. on cylinder I1.

In the machine illustrated an automatic throwoil is provided for blanketcylinder I6, which causes that cylinder to move in a directiondiagonally downward toward the left away from both of cylinders I5 andIl. As more fully disclosed in our aforesaid application, the cylinderI6 rotates upon shaft I3, and vshaft I3 is in turn supported ineccentrics that are rotatably mounted in the frame members III. Theseeccentrics are keyed to the shaft so that they both turn together and tothe same extent. Consev quently they may be actuated from one end of thecylinder only. One such eccentric is illustrated at 28in the drawings..To it is attached a crank 29.

On the end of crank 29 there is mounted a noddle pin 30 which isperforated to receive the.

end of' a short connecting rod 3|, the lower end of which is formed withan eye which surrounds a pin 32 mounted in a bell crank lever 33 whichis pivoted to the frame at 34. `'I'he lever 33 is provided with twoadjustable studs 35 and 3B which are adapted to engage with stop blocks31 and 38 respectively on the frame of the machine, thereby limiting themovement of the' lever in either direction.

The right-hand end of lever 33, as viewedI in Figs. 1 and 3, is formedwith a slot' 39 which receives a pin 40 that is mounted in a lever 4Iwhich pivots upon a pin 50 s et into the frame I0. The lever 4I is alsoprovided with two forwardly projecting pins 5I and 52. These latter pinsare adapted to be engaged on their lower sides by .shoulders on theopposite lsides of a plunger 53 which carries a roller follower on itslower end. This follower runs upon a cam 54 which is pinned to shaft I9.

Pivotally connected with the plunger 53 is a trip rod 5l which may beautomatically operated in connection with the sheet feeding mechanism ofthe press, or manually operated. It is shown in Fig..1 in thenormal'running position. In order to guide the lower end of plunger 53and in order to provide pressure to hold the plunger follower againstthe surface of c-am 54, we mount the lower end of the plunger upon apivot 58 carried by the bifurcated end of a bell crank lever 59 which ispivotally mounted upon the frame at 60. Within the bifurcated extremityof the other end of lever 59 we pivot a rod 6I which is slidably mountedin a perforated ear 62 projecting from the frame I0. A coil spring 63surrounds the rod 6I between the ear 62 and adjusting nuts 6,4threadably mounted on the rod. Spring 63 therefore tends to lower pivotpin 58.

lNow, assuming that the sheet feeding means of the press is providedwith an automatic trip mechanism, then when there is an interruption tothefeeding of the sheets the rod 51 moves toward the left from theposition illustrated in Fig. 1, throwing the plunger 53 against the sideof pin 5|.. As the high spot of cam 54 raises plunger 53 the shoulder onthe left of the plunger engages pin 5| and pushes it upward, therebyswinging the lever 4| from the position of Fig. 1 to that of Fig. 3.Lever 33 is thereby swung to the position of Fig. 3, pulling downwardlyupon the outer lend of crank 29, and imparting a slight clock- \wiserotation to eccentric 28, which moves the shaft I3 sufficiently to throwcylinder I8 out of contact with cylinders I5 and |1.

.The inker includes a lower frame 88, which comprises two independentside members. This frame is pivotally mounted at one end upon a shortshaft 8| which is fixed in an upwardly projecting part of the frame I8,and at the other upon a sleeve 82 mounted in the frame surrounding 'ashort shaft 83, to which reference will be made again hereinafter. Thetwo shafts 8| and 83 are, of course, in alignment. 'Ihis frame 88 hasbrackets 84, 85 and 88 in which are rotatably mounted form rollers 81,88 and 89 respectively, which run upon plate cylinder |5 in the normalprinting position', as indicated in Fig. 1.

`Also pivoted upon shaft 8| and sleeve 82 is a second or upper fame 98,having side members and cross struts. While the pivotal mounting offrames 88 and 98 about a common axis is the preferred construction, itis permissible to mount them upon separate axes. and one of them may bepivotally carried by the other, the latter being pivoted inthe mainframe `of the machine. In frame 98 there may be'mounted the'remainingelements of the inker, including an ink fountain 9|, an ink drum 92,storage rollers 93 and 93', and idler'gears 94 and 95. A gear 95 on theinner end of shaft 83 meshes with idler 94 which drives a gear 91 on theshaft of roller 93, while idler takes its driving force from gear 91 andtransmits rotation to a gear 98 on the shaft of drum 92 and to a gear 99on the shaft of roller 93. In the operative position of the inker, thetwo storage rollers 93 and 93. transfer ink to the form rollers 81, 88and 89 which spread it upon the platecylinder I5.

'Ihe forward ends of the two side membersof frame 88 are recessed toii't over upwardly pro- Jecting portions of the side members of themain.

frame I8. Within each of these side members are .sockets receivingpiungers |88 that are pressed upwardly by coil springs |8I. The plungersengage the side members ofthe frame 88 and tend to raise that frame tothe extent indicated in Figs. 3, 4 and 6. The forward ends of the sidemembers of frame 98 rest upon the forwardends of-fra'me 88Vand hence areinfluenced by the springs |8| and their plungers |88.

We provide means, however, to pull down the forward ends of frame 98against the action of springs |8| and to hold both frames inl their`lowered position, indicated in Fig. 1, this means serving further toraise upper frame 98 to its fully elevated position shown in Fig. 4. Themeans in question comprises a pair of connecting rods |82 adiustablypivoted to the forward ends of the side members of frame 98. The lowerextremities of these connecting rods are curved and are pivotallyconnected at |83 with cranks |83' carried outside the main frame membersby a rock shaft |84. On one end of this shaft there is pinned a handcrank I85 by means of which the shaft may be turned from one extremevposition, illustrated in Fig. l, through an intermediate position,illustrated in Fig. 3, where the springs |8| are free to act, and toitsother exl and 89 for removal and replacement. It will be noted that inFig. 1 the pivot point |83 is` overv center in one direction, while inFig. 4 it is 'over center in the other direction. Hence wheneither oneof these positions has'been assumed, the parts tend to remain in thatposition.

An adjustable screw |88 mounted in one of the connecting rods |82engages the shaft |84 and limits the downward movement of rods |82 andthe clockwise movement of crank I85. An adjustable screw |81 carried bythe main frame i i8 engages a projection |88 on the crank I85 and limitsthe upward travel of frame 98, as indicated in Fig. 4.

It is desirable that the form rollers 81,88 and 89 be lifted out ofengagement with cylinder I5 whenever the feed of paper sheets isinterrupted,

and to this end we provide means for vshifting' crank |85 from theposition of Fig. 1` to that of Fig. 3 whenever the throw-ofi? forblanket cylinder I6 is operated. This means consists of a rod |89pivoted upon the extremity of pivot pin 32 and resiliently supportedfrom eccentric 28 by a coil spring I|8. At its free end this rod is madeslightly concave so as to t upon projection |88 of crank |85. When thetripping mechanism of the press operates to shift rod 51 toward the leftfrom the position of Fig. 1, and the plunger' 53 is raised by cam 54,moving levers 4I and 33 to the positions of Fig. 3, rod |89 is carriedt0- ward the left and swings levery I85 overdead center, whereuponsprings |8I exert pressure acting through piungers |88 to lift theforward extremities vof frames 88 and 98, thereby raising the formrollers 81, 88 and 89 sufiiciently to clear plate cylinder |5.

On shaft 24 outside of frame I8 there is al sprocket wheel ||1 overwhich runs a chain ||8 that extends upwardly and over a sprocket wheelI|9 on shaft 83. It is by this means that the inker rollers are driven.

The dampening mechanism, which is indicated diagrammatically in thedrawings, comprises a frame |28, a fountain roller I2I, a swingingductor roller |22, a pair of rollers |23 and |24 in contact with theplate on the plate cylinder I5, and an intermediate roller |25. Roller|25 carries a gear which meshes with a gear mounted in frame |8 andindicated at |26, which in turn meshes with a gear |21 on shaft 83. (SeeFigs. 2 and 5.)

From theforegoing it will be apparent that whenever there is aninterruption in the feedof sheets to lthe press, both of the frames 88"and 88 are automatically raised to prevent further inking of the platecylinder, .and that this is accomplished by swinging the entire inkmechanism upwardly about its pivotal mounting. It

will also be apparent that by the manipulation of lever |85 the inkingof plate cylinder |5 may be discontinued manually, that is by throwinglever |85 to the position of` Fig. 3, and that by continuing themovement of lever |85 to the position of Fig. 4 the upper frame 98 maybe raised independently of frame 88 far enough to expose form rollers81, 88 and 89, permitting their re.

area-seo l s -3 lof the other, one of said frames carrying a form rolland the other carrying means continuouslyl engaging said form'roll forinking the same, and throw-off means for moving said two frames out ofoperative position.

2. In a machine of the class described, a main "frame, an inkercomprising two frames each mounted on the main frame to swing about ahorizontal axis, one of said inker frames carrying a form roll and theother carrying means con- `tinuously engaging said form roll for inkingthe same, and throw-off means for moving said two frames simultaneouslyout of operative position.

3. In a .machine of the class described, a main frame, an inkercomprising two frames each mounted on the main frame to swing about ahorizontal axis, one oi said inker frames carrying a form roll and theother carrying inking apparatus adapted to cooperate with said formroll' continuously during the normal operation of the inker, throw-oimeans for moving said two frames simultaneously out of operativeposition, and

means for moving that one of said frames which carries the last namedinking apparatus away from operative position to a greater extent thanthe frame which carries the form roll.

4. In a machine ci' the class described, a pair of swinging framespivotally mounted about the same axis, inking apparatus carried partlyby one frame and lpartly by the other, means for holding both of saidframes in operative position, spring means tending to shift both framesout or operative position, means for releasing said holding means, andmeans for moving one o1' said frames about said axis to increase theangle between the frames and separate that portion of the inkingapparatus carried by one Irame'i'rom the portion carried by the otherframe.

5. Ina printing press, a printing couple, an

' inker comprising two frames pivotally mounted to swing about the sameaxis, a form roll mounted upon one of said frames, a distributing rollmountedl on the other frame and adapted to cooperate with said lformroll, a throw-o i for said printing couple, trip mechanism arranged tooperate said throw-oil and swing said first-mentioned frame away fromoperative position, and means for manually swinging one of said framesaway from the other frame in order to expose said form roll.

6. In a printing press, an inker comprising a frame pivotally mounted toswing about ahorizontal axis, spring means tending to raise the free endof said frame to a limited extent, a lever and link mechanism arrangedwhen in one position to hold down said frame against the action of saidspring, when in another positiontopermi'tthe raising of the frame bysaid spring means, and

when moved to a third position to raise the free end of said framebeyond the elevation resulting from vthe action of said spring means.

'7. In a machine of the class described. an inker comprising an inkfountain, two frames, 'a form roller carried by one ot said'framealiirst and second distributing rollers -carried by the other ofsaid frames, said first distributing roller being normally in contactwith said form roller and with said second distributing roller, saidsecond disl tributing roller being located between the ink Afountain andsaid 'rst distributing roller for conveying ink from the former to thelatter, power operated means controlled lby said machine for moving bothof said frames away from operative 10 position while maintaining the,positions of all three of said rollers relative to each other, and meansfor separating said form roller from said iirst distributing roller.comprising means for l moving one of said frames relative to the other.15 8. In a machine of the class described, an inker comprising an inkfountain, two pivotally mounted frames, a form roller carried by one oi.said frames, first and second ink distributing rollers carried by theother of said frames, said rst zo distributing roller being normally incontact with said form roller. said second distributing roller beinglocated between the ink fountain and said first distributing roller forconveying ink from the former to the latter, means for swinging said 2,5

two frames about the axis of one of them out of operative position whilemaintaining the positions of the rollers carried thereby in the samerelation relative to each other, and means for swinging one of saidframes about its pivot rela- 30 tive to the other frame to separate saidform roller from said iirst distributing roller.

9. In a machine of the class described, an inker comprising iirst andsecond pivotally mounted frames adapted to swing about a. common axis,a" 5 form roller carried by said first frame, an inking roller normallyin contact with said form roller and carried by said second frame, meansfor swinging one of said frames about its axis relative to the otherframe for separating said rollers, 40

and a gear i'or driving said'last mentioned roller mounted to turn onthe common axis of said frames.

l0. Inama'chine of the class described, an-inker comprising rst andsecond pivotally mounted frames, a form roller carried by said firstframe, a plurality of positively driven elements for inking said formroller carried by said second frame, means for swinging both of saidframes about a common axis out of operative position, means for swingingone of said frames about its axis relative to the other frame, andgearing for said positively driven elements including a gear mounted toturn on the common axis of said frames. l'

1l. In a machine of the class described, an inker comprising rst andsecond pivotally mountedl frames, a form roller carried by said rstframe, an ink fountain and associated elements carried by said secondframe', throw-oil.' means for moving 30 said two frames simultaneouslyabout a common axis out of operative position, and a gear for drivingsaid ink fountain and associated elements mounted to turn on the commonaxis of said frames.

12. Ina machine of the class described, a main frame, an inkercomprising two frames eachmovably mounted with respect to the other,inking apparatus carried partly by one frame and partly by the other,operative connections acting on one of said frames for moving bothframes into operative position and holding them there under vpressure,and means acting on the other of said frames for moving both frames outoi' operating position.

13. In a machine of the class described, amain frame. an inkercomprising two frames each movably mounted with respect to the other,inking apparatus carried partly by one frame and partly y by the other,operative connections acting on one oi said inker frames for moving bothinker frames toward said main frame into operative position and holdingthem there under pressure,v and resilient means acting on the other ofsaid inker frames tending to oppose said movement and when freed fromthe restraint of said first named means serving to move both frames outof operative position.

`14. In a machine of the class described, a main frame, an inkercomprising two trames each mqv- 15 ably mounted with respect to theother, the rst and connections between the main frame and said secondinker frame for moving the latter into operative position.

CHARLES W. HARROLD. CLYDE Ci'.A HORTON.

